baber/WOPTO huggingface dataset:
Patent GB-1302619-A (GB)
IPC: C08F283/04
Filed: 1970-02-27
Abstract: 1302619 Graft polymer membranes CONSIGLIO NAZIONALE DELLE RICERCHE 27 Feb 1970 9633/70 Heading C3G [Also in Division B1] Membranes for use in reverse osmosis are produced by contacting a matrix film, having a thickness of 1 to 25 microns, of a polyamide, polyethylene, polypropylene or polytetrafluoroethylene with a monomer (a) having functional polar groups or (b) capable of receiving functional polar groups, inducing at least partial graft polymerization of said monomer on to said matrix and, where necessary, further processing the thus formed graft polymer to add functional groups thereto, the resulting membrane containing at least 5 molar per cent of polar groups based upon the grafted monomer, being from 115 to 250% of the weight of the matrix prior to treatment and having a water permeability at least ten times greater than that of the said matrix. In the examples are produced by (1) grafting polytetrafluoroethylene or polyethylene with styrene, or styrene and divinylbenzene, and sulphonating the graft polymer; (2) grafting polytetrafluoroethylene with styrene, chloromethylating the graft polymer and quaternizing it with trimethylamine; (3) grafting polytetrafluoroethylene with acrylic acid or vinyl acetate; (4) grafting polytetrafluoroethylene, polypropylene or nylon with vinyl pyridine and quaternizing it with methyl iodide; (5) grafting nylon with vinyl pyridine and quaternizing it with ethyl bromide, alone or in the presence of alpha, alpha<SP>1</SP>-dibromo-para-ditolylsulphone; (6) grafting nylon with acrylic acid and hexamethylenediamine diacrylamide and (7) grafting nylon 6/11 copolyamide with vinyl pyridine and quaternizing it with ethyl bromide.
Patent GB-1305700-A (GB)
IPC: G02B5/28
Filed: 1971-06-11
Abstract: 1305700 Interference filters STANDARD TELEPHONES & CABLES Ltd 11 June 1971 27506/71 Heading G2J A band rejection filter consists of a substrate with stacks of interference filters on each surface, the two surfaces being mutally inclined to prevent coherent phase addition of inter-reflected components between the two stacks.
Patent GB-1306357-A (GB)
IPC: F16B39/36
Filed: 1969-09-13
Abstract: 1306357 Anchor bolts; sockets ADBAR (PATENT CO) Ltd 1 Sept 1970 [13 Sept 1969] 45230/69 Heading F2H A threaded insert, Fig. 1, on an anchor bolt, Fig. 4, comprises a body member 1 at least part of which is externally tapered as at 10 over which an expansible sleeve or ferrule 2 is driven after the member has been positioned within a hole 3 so that the sleeve or ferrule wedges itself and the member 1 within the hole. The ferrule has a cutting edge 21 to shear material from the wall of the hole and it may be tapered and have an external periphery which is knurled, serrated or barbed. The ferrule may also be longitudinally split at 20 and have an inherent resiliency such that it tends to remain on the body until it is required for use.
Patent GB-1309148-A (GB)
Title: Metal frame structures of illuminated box signs
IPC: G09F13/04
Filed: 1970-05-20
Abstract: 1309148 Illuminated signs METALCRAFT (BRISTOL) Ltd 19 May 1971 [29 May 1970] 24488/70 Heading G5C  A frame structure of a box sign consists of walls 2, 3, 4, each of which is made up of 3 types of extruded metal sections, having crosssections as shown in Fig. 2. The sections A form the main structure of the walls. The sections B, spaced apart as shown, are reinforcing members and the sections C, attached to section A by means of screws (68), Fig. 3 (not shown), form a frame by means of which the screen 6 can be attached, being held around its periphery between flanges 34 and 26. The corner joints, Fig. 4 (not shown), have screws (64) engaging sockets 16 and 44. Additional sections B1, having the same crosssection as sections B, fit in the grooves between flanges 10 and 18, and are attached by screws (72), Fig. 3 (not shown). A rear panel 7 may then be screwed on. The sections A, B may be formed integrally, or separately, Figs. 6 and 7 (not shown).
Patent GB-1310549-A (GB)
Title: Method of producing swaged-and-welded bodies of large-size piping  valves and fittings and a die set for carrying out the method
IPC: B21K1/24
Filed: 1970-06-23
Abstract: 1310549 Making valve bodies; forging TSENTRALNY NAUCHNO - ISSLEDOVATELSKY INSTITUT TEKHNOLOGII MASHINOSTROENIA 23 June 1970 30390/70 Headings B3A and B3H [Also in Division F2] A valve body or pipe coupling having a duct diameter greater than 250 mm. is made by forming two domed blanks by swaging so that at least one of them has a thicker central zone portion forming an inlet or outlet in the central zone portion and welding the two blanks together. In one embodiment, a drawn domed blank 29 having a central hole 30 is positioned on a swaging male punch 26 and a female die 24 lowered to swage the blank. Metal is displaced towards the hole 30 so as to form a reserve of metal for the subsequent shaping of the inlet or outlet in the blank. A punch 25 is then lowered to shape the inlet or outlet in the blank, the shaping operation causing a counter punch 28 to be depressed a short distance. The swaged blank is ejected by the counter punch 28. The valve body or coupling is finally formed by welding two swaged halves together. The domed halves may alternatively be swaged from tubular blanks (Figs.-11-13, not shown).
Patent GB-1310884-A (GB)
Title: Steps for rope ladders
IPC: E06C1/56
Filed: 1969-11-20
Abstract: 1310884 Steps for rope ladders DUNLOP HOLDINGS Ltd 16 Oct 1970 [20 Nov 1969] 56866/69 Addition to 935645 Heading E1S In a rope ladder comprising parallel spacedapart support ropes and moulded elastomeric steps, the steps have a pair of holes 1 at each end for the passage of ropes, a slot 7 connecting each hole to an adjacent edge of the step for insertion of the ropes laterally into the holes, and guides 5 extending along the ropes adjacent the steps to prevent the steps tilting. The wedge-shaped guides 5 are formed on both surfaces of the step between the holes of each pair. The slot 7 is narrower than the rope, and the elastomeric step must be distorted to allow insertion of the rope.
Patent GB-1312241-A (GB)
Title: Differential capacitor
IPC: G01D5/24
Filed: 1969-01-31
Abstract: 1312241 Displacement transducers G O NORRIE 29 April 1970 [31 Jan 1969] 5347/69 Heading G1N A differential capacitor for measuring linear or angular displacement comprises two fixed electrodes 11, 12 (Fig. 1) and a pick-up electrode 15 whose coupling with the individual fixed electrode is varied by laterial displacement of it or of a screen Fig. 8, (not shown), the two fixed electrodes 11, 12 co-extending in the direction of movement 14. The fixed electrodes are separated by an obligue gap 13 and the voltage on the pick-up electrode 15, when the plates 11, 12 are connected to an AC supply, is adjusted by additional, fixed, longitudinal plates 18, 23 each with its own AC voltage, coupled to moving electrode 15 via adjustable screws 22, 25. Alternative ways of utilizing the correcting plates 18, 23 are described. The gap may have a zig-zag configuration 60 (Fig. 3) and the fixed plates or, as shown, the moving plate may be duplicated, the two plates 58, 59 being spaced 90 degrees apart relative to the cyclic zig-zag shape. One of the correcting plates may alternatively be a differential capacitor, 52, 53, 54 of the same type, giving a coarse displacement measurement over the complete displacement range. In another embodiment (Fig. 6) the fixed electrodes 100, 101 are formed on the inside of a cylindrical shell 97 co-operating with an axially movable pick-up electrode 96. Similar embodiments for measuring angular displacement are also described.
Patent GB-1315444-A (GB)
Title: Apparatus for and a method of applying transfers to articles
IPC: B44C1/16
Filed: 1971-04-15
Abstract: 1315444 Applying transfers REED INTERNATIONAL Ltd 14 April 1972 [15 April 1971] 9522/71 Heading B6C Transfers are applied to flat articles 2, 3 by being applied to a web 7 or 8, pressed by rollers 5, 6, against the articles with adhesive between and left adhering to the articles when the web is striped off. The article 3 leaves the rollers with the transfer and web adhering to it, and a reciprocating stripper 12 travels with the leading edge of the article, then is moved sharply against the movement of the article to a position adjacent the rollers, so removing the web. After removal, the web may be wound into a roll.
Patent GB-1316352-A (GB)
Title: Method of model railway track circuit control
IPC: B61L1/18
Filed: 1970-05-12
Abstract: 1316352 Model railway control NORTHMORE & PARTNERS Ltd 9 Aug 1971 [12 May 1970] 22780/70 Heading B7N In a track circuit control system for a model railway having a continuous negative rail and a positive rail formed of insulated sections which, with the exception of "stop" sections, are connected via low value resistors to the positive traction supply, a solid state control module is associated with each "stop" section and is controlled by pulses developed across the resistors as a train enters the sections. Assume in the control module multivibrator that transistor TR2 is off then via transistor amplifier TR3 the transistor TR4 is driven to saturation and a train in stop area A is energized. During its movement in the direction of the arrow the train first produces a "stop" pulse to switch the module to its "off" state so that a subsequent train is stopped at areaA; then generates a "go" pulse for the preceding module and eventually after release from stop area B produces a "go" pulse which switches the module to "go" so that the subsequent train can leave stop area A.
Patent GB-1317422-A (GB)
Title: Air cushion supported platforms
IPC: B60V1/00
Filed: 1971-01-05
Abstract: 1317422 Air cushion supported platform BRITISH HOVERCRAFT CORP Ltd 14 Dec 1971 [5 Jan 1971] 432/71 Heading B7K A load bearing platform is supported by a plurality of air cushions bounded by a skirt and carries a plurality of pivotally mounted containers 18, Fig. 3, which are tiltable by pressurized air diverted from lift fan 14. The cushion air is supplied to two rigid ducts 30, Fig. 4, along the longer sides of rectangular base 11 and thence through orifices (31), Fig. 6 (not shown) closable by flaps (32) to a looped skirt 22 carrying discrete flexible fingers 24. The cushion area is bounded at the ends, and is divided internally, by rows of discrete cones 25, 26 which are in communication through orifices (27), Fig. 7, (not shown), and are supplied from the skirt 22 through orifices (50). If the air supply to the cushion is cut off by means of the flaps (32) the platform will rest on pads 29. Each container is pivoted on hinges 19 and rests on packing pieces 20 so that there is a space 21 beneath the container which is bounded by flexible impermeable sheets 35. Pressurized air may be supplied from the lift fan to the space 21 beneath each container to tilt it from a loadcarrying position (Fig. 3, right hand side), to an unloading position (left hand side). The pivot axis of each container may be at the edge of the plan area of the container, Fig. 3, or inside or outside the area, Figs. 9 and 10 respectively (not shown).
Patent GB-1318452-A (GB)
Title: Data-processing apparatus for business machines using punched-tapes
IPC: B41J5/38
Filed: 1970-08-24
Abstract: 1318452 Record tape controlled printing machines KOMBINAT ZENTRONIK VEB 24 Aug 1970 40686/70 Heading G4H In a system for feeding data to a printing machine or an accounting machine two tape readers are used, one tape containing a series of blocks of data identified by addresses and the other a series of addresses specifying the desired blocks of data, and decimal digits are used as the addresses, the desired addresses being entered into a shift register and transferred in turn to the input of the comparator, the addresses road from the data tape also being applied digit by digit to the comparator, the arrangement being such that when a preset number of decimal digits have been compared the comparison is terminated, agreement allowing the associated data block to be read out to the printer or accounting machine. Address characters on the data block are distinguished by being preceded and followed by a special mark character which, when detected, sets a trigger initiating the above mentioned comparison operation. The address digits read from the "desired address" tape are entered in turn in 8-track tape code into eight triggers 25-28 &o. Fig. 1 by signals at 58-61, &c. Alternatively desired addresses may be entered on inputs 62-65 &c. from a keyboard or other equipment. Each digit in turn passes from triggers 25-28 &c. to other groups of triggers forming the shift register (Fig. 5, not shown). During a comparison the digits are stepped through the original group 25-28 &c. in synchronism with the reading of the address digits from the data tape, these being entered in turn into triggers 17-20 &c. Shifting of the data is under the control of pulses derived from a brush reading the sprocket holes on the tape. During a comparison operation these pulses are counted in a digit counter which is preset to the number of significant digits in the address. If the comparator has not produced a disagreement by the time the preset counter gives an output the data of the corresponding block is read-out. If a disagreement signal is produced the comparison operation is terminated and the data tape steps to the next address. Some only of the digits may be used for example the highest three, the counter then being preset to this number and the stored address rapidly cycled to the home position after each comparison. In this case all blocks of data having these address digits will be selected. The comparator (Fig. 1C not shown) comprises a series of AND NOT gates receiving corresponding outputs from the triggers 25-28 &c., and 17-20 &c., all connected through an OR gate to a trigger which sets when any of the stored bits disagree.
Patent GB-1318611-A (GB)
Title: Method of producing stabilized laser radiation
IPC: H01S3/139
Filed: 1970-07-06
Abstract: 1318611 Lasers CARL ZEISS JENA VEB 6 July 1970 16122/70 Heading HlC A frequency stabilized ring laser includes a non-reciprocal absorber 5 in the resonator defined by mirrors 1, 2, 3, and uses an active medium having an inhomogeneously broadened line width so that the two oppositely-directed beams produced by the medium interact, the beams being coupled sufficiently at the median resonant frequency for one beam to become predominant, and both beams becoming decoupled and more equally effective if a frequency change occurs due to mechanical or thermal fluctuation of the optical path length in the resonator. Each beam is separately extracted through partially transmitting mirror 2, and is detected by a respective photodetector 6, the presence of both beams causing an electronic circuit to produce pulses which adjusts the position of mirror 3 through an electromagnetic member 8.
Patent GB-1319625-A (GB)
Title: Gaming machines
IPC: G07F17/34
Filed: 1970-04-30
Abstract: 1319625 Coin-feed amusement machines; random numbers BELL-FRUIT MFG CO Ltd 21 July 1971 [30 April 1970] 20833/70 Headings G4D and G4V  A gaming machine, particularly of the fruit machine type, having means for displaying a random selection of symbols includes an electronic control unit that comprises a pulse generator E, a digital counter F which receives and counts pulses from the generator, stop means which control the counter so that either it counts cyclically over a limited first part of its range or is freed, when a game is initiated by a player, to count over its whole range, and output gates G1 to G4 which are connected to the counter and each pass a control signal in the display means when the counter is in a respective particular counting state outside the limited range. In the embodiment described the pulse generator Ecomprises two circuits E1 and E2 oscillating at different frequencies coupled to a NAND gate E3 giving irregularly spaced input pulses to the counter F, which comprises six stages, the last two C, C and D, D normally being held in their zero states by an inhibit signal from portion H3 of bi-stable #H3, H3. On the insertion of a coin switch T is temporarily closed causing NAND gate G5 to give a zero output signal which triggers portions H4 and H5 of bi-stable devices H4, H4 and H5, H5 to the conducting state, energizing the reel motor M and triggering the bi-stables H1, H1; H2, H2; and H3, H3 to release the fruit machine reels R1, R2 and R3 to be driven by the motor M, and also remove the inhibit signal from the counter F to allow it to count over its whole range. On reaching the counts of 28, 40, 52 and 60 respectively the NAND gates G1 to G4 give zero output pulses which reset the bi-stables #H1, H1 to #H4, H4 to stop the reels and deenergize the reel motor. Payout unit.-The payout unit (Fig. 3, not shown) comprises a counter (J) that is normally held in its zero or 16 state but is selectively settable to other counting states by signals from a win decoder (Fig. 2, not shown) that senses and analyses the final positions of the reels and also by a change giving mechanism. When the counter (5) is in any other state apart from zero or 16, a coin dispensing motor N is operated, a pulse being directed to the counter for each coin dispensed until it is counted back to 16.
Patent GB-1331749-A (GB)
Title: Adjustable connecting device for the float arm of a ball cock
IPC: F16K31/18
Filed: 1970-01-08
Abstract: 1331749 Valves H F HEATH 7 Jan 1971 [8 Jan 1970] 923/70 Heading F2V To avoid the need to bend a float arm to adjust the controlled level in a cistern, the arm is cut or sawn intermediate its length and the two parts are joined together by an attachment having two parts 10, 11 hinged at 12 and adapted at 10a, 11a to be clampled to adjacent ends of the parts of the float arm. Self-tapping screw 14 provides an adjustable abutment for part 10 which is connected to the float. As shown, the parts 10, 11 are separate metal pressings or stampings, but in a modification the parts could be of metal or plastics mouldings. When made of plastics, the two parts could be joined by an integral flexure hinge. Part 11 could be adapted to limit relative downward movement of part 10. Screw 14 could be replaced by a  wedge, and clamps 10a, 11a could be replaced by grub screws or wedging liners.
Patent GB-1334516-A (GB)
Title: Crankshaft grinding machines
IPC: B24B5/42
Filed: 1971-04-19
Abstract: 1334516 Grinding crank-shafts PRINCE MACHINES Ltd 19 April 1971 [15 Jan 1970] 1995/70 Heading B3D  A crank-shaft grinding machine comprises a headstock 11 and tailstock for setting up the crank-shaft for rotation about a generally horizontal axis, a grinding wheel 13 rotatable about an axis parallel to the set-up axis and supported by a beam or trunnion 12 for swinging movement towards and away from the workpiece, and a finger 16 for engaging the crankshaft and movable relative to the working surface of the grinding wheel so that it trails the grinding wheel in each of its directions of axial movement. A carrier 14 is mounted to swing about the axis of the grinding wheel and carries the finger 16, which is a sizing finger, and a control finger 15, each finger having a body 15a, 16a carried by a rack, and a rubbing pad 15b, 16b having a hard facing 25c, 16c, such as carbide. The body 16a of finger 16 is mounted for pivotal movement about an axis XX perpendicular to the facing 16c so that upon traversing movement of the grinding wheel in either direction, the finger trails the grinding wheel and thus always engages the surface just ground. In another embodiment, the finger is mounted for movement laterally along a slide, and means may be provided for moving the finger.
Patent GB-1335811-A (GB)
Title: Endless belts
IPC: F16G1/14
Filed: 1970-04-29
Abstract: 1335811 Belt gearing J S HEATON J J S HEATON J R S HEATON [trading as JOSEPH DEWHIRST & CO] 3 Nov 1970 [29 April 1970] 20552/70 Heading F2Q A method of making endless belts from flexible plastics strip 70 comprises coiling the strip into a helix of regular pitch, clamping all the convolutions of the helix at two positions by means of clamps 12, 14, severing the convolutions between the clamps 12, 14, displacing one set of cut ends a1, b1, c1, dl, Fig. 5B relatively to the other set of cut ends a2, b2, c2, d2 by the distance of one pitch of the helix, as in Fig. 5C, so that each pair of facing cut ends are on the same convolution of the strip, and uniting the ends of the strip then opposite each other. Each clamp 12, 14 comprises pivoted arms 28, 34 which may be clamped together by a pivoted lever 38. The clamps 12, 14 are pressed apart by springs 48 and the position of clamp 14 is determined by cams 66 acting through push rods 54. A handle 64, secured to the cams 66 by arms 62, is moved to rotate the cams 66. The ends of the strips are welded together by introducing a heated plate 74 between the cut ends, withdrawing the plate and pressing the two sets of cut ends together. Preferably the belt is made of polyurethane elastomer.
Patent GB-1338002-A (GB)
Title: Process for the preparation of heterocyclic polymers
IPC: C08L75/04
Filed: 1971-03-26
Abstract: 1338002 Heterocyclic polymers ESSO RESEARCH & ENG CO 26 March 1971 7896/71 Heading C3R A heterocyclic polymer containing rings of formulµ where X is =NH, linked by divalent organic radicals R, are obtained by reacting an organic diisocyanate OCN-R-NCO with hydrogen cyanide in a solvent in the presence of a tertiary nitrogen-containing compound as catalyst, at 5 to 70 C. In examples polymers are obtained by reacting hydrogen cyanide with diphenylmethane diisocyanate, with hexamethylene diisocyanate and toluene diisocyanate, the catalysts being pyridine, 1-aza-3,3,7,7-tetramethyl bicyclo (3.3.0) octane and triethylamine. Uses.-Films, fibres, foams, moulded objects, laminates and electrical insulators.
Patent GB-1338785-A (GB)
Title: Automatic flexible sheet material piece feeding
IPC: B65H3/22
Filed: 1972-06-14
Abstract: 1338785 Feeding sheets PASOLDS Ltd 14 June 1972 [14 June 1971] 27729/71 Heading B8R Sheets in a magazine 2, Fig. 1, are supported at the front end on upwardly curved fingers 17 and at the rear end by a lip 29. The bottom sheet 5 is separated by needles projecting upwardly from a block 15, Figs. 1 and 2, reciprocated by an air cylinder 4. The block 15 first moves to the left to move the sheet clear of the fingers 17, and then to the right to feed it from above the lip 29, along below the fingers 17 into a shoot over a comb 32. The sheet is released by the needles when a pin on the carriage engages a stationary ramp to move the carriage downwards, the carriage then returning to pick up the next sheet. The sheet is fed along the shoot by air blown from nozzles 6, and then along a hinged shoot 8 by air from a nozzle 7 and on to an oscillatable carrier 14 where it is clamped by a spring clip. The shoot 8 is pivoted upwards by an air cylinder 10 clear of the path of the carrier 14, which is then moved counter-clockwise to bring the sheet to an operating station 26 of a processing-machine. The cylinder 4 is actuated to initiate a feed cycle by a valve controlled by the processing cycle of the machine.